/* 自定义样式文件 - 优化版本 */

/* ===== 字体系统 ===== */
@font-face {
  font-family: 'HarmonyOS Sans SC';
  src: url('../fonts/HarmonyOS_Sans_SC_Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'HarmonyOS Sans SC';
  src: url('../fonts/HarmonyOS_Sans_SC_Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'HarmonyOS Sans SC';
  src: url('../fonts/HarmonyOS_Sans_SC_Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ===== CSS变量系统 - 统一设计令牌 ===== */
:root {
  /* 颜色系统 */
  --color-primary: #3b82f6;
  --color-primary-light: #60a5fa;
  --color-primary-dark: #2563eb;
  --color-secondary: #64748b;
  --color-accent: #8b5cf6;
  
  /* 中性色系统 */
  --color-neutral-50: #fafafa;
  --color-neutral-100: #f5f5f5;
  --color-neutral-200: #e5e5e5;
  --color-neutral-300: #d4d4d4;
  --color-neutral-400: #a3a3a3;
  --color-neutral-500: #737373;
  --color-neutral-600: #525252;
  --color-neutral-700: #404040;
  --color-neutral-800: #262626;
  --color-neutral-900: #171717;
  
  /* 语义化颜色 */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #fafafa;
  --color-text-primary: #171717;
  --color-text-secondary: #525252;
  --color-border: #e5e5e5;
  --color-border-hover: #3b82f6;
  
  /* 阴影系统 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* 圆角系统 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* 间距系统 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* 动画系统 */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* 字体系统 */
  --font-family-primary: 'HarmonyOS Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
}

/* 暗色模式变量 */
.dark {
  --color-bg-primary: #171717;
  --color-bg-secondary: #262626;
  --color-text-primary: #fafafa;
  --color-text-secondary: #a3a3a3;
  --color-border: #404040;
  --color-neutral-50: #262626;
  --color-neutral-100: #404040;
  --color-neutral-200: #525252;
  --color-neutral-800: #171717;
  --color-neutral-900: #0a0a0a;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
}

/* ===== 基础样式重置 ===== */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-primary);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ===== 统一卡片系统 ===== */
.unified-card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.unified-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-border-hover);
}

.unified-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.unified-card:hover::before {
  opacity: 1;
}

/* ===== 分类组件优化 ===== */
.categories-section {
  padding: var(--spacing-md) 0;
  margin-top: 0;
  width: 100%;
  overflow: hidden;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.category-card {
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  min-height: 4.5rem;
  text-align: center;
  width: 100%;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text-primary);
  aspect-ratio: 1;
}

.category-card:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-hover);
  text-decoration: none;
  color: var(--color-text-primary);
}

.category-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin: 0;
  padding-top: var(--spacing-xs);
  line-height: 1.3;
  z-index: 2;
  position: relative;
}

.category-description {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin: var(--spacing-xs) 0 0 0;
  line-height: 1.2;
  z-index: 2;
  position: relative;
}

.bg-icon {
  position: absolute;
  bottom: -5px;
  right: -5px;
  font-size: 2.5rem;
  opacity: 0.1;
  transform: rotate(-10deg);
  pointer-events: none;
  z-index: 1;
}

/* ===== 移动端分类组件固定布局 ===== */
@media (max-width: 640px) {
  .categories-section {
    padding: var(--spacing-sm) var(--spacing-xs);
  }
  
  .categories-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-xs);
  }
  
  .category-card {
    padding: var(--spacing-sm) var(--spacing-xs);
    min-height: 3.5rem;
    aspect-ratio: 1;
  }
  
  .category-title {
    font-size: 0.7rem;
    padding-top: var(--spacing-xs);
  }
  
  .category-description {
    font-size: 0.6rem;
    margin-top: 0.1rem;
  }
  
  .bg-icon {
    font-size: 2rem;
    bottom: -3px;
    right: -3px;
  }
}

@media (max-width: 480px) {
  .category-card {
    padding: 0.4rem 0.2rem;
    min-height: 3rem;
  }
  
  .category-title {
    font-size: 0.65rem;
  }
  
  .category-description {
    font-size: 0.55rem;
  }
  
  .bg-icon {
    font-size: 1.8rem;
  }
}

/* 极小屏幕保护 */
@media (max-width: 360px) {
  .categories-grid {
    grid-template-columns: repeat(4, minmax(70px, 1fr));
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: var(--spacing-xs);
  }
  
  .category-card {
    scroll-snap-align: start;
    min-width: 70px;
  }
  
  .categories-grid::-webkit-scrollbar {
    height: 0;
    display: none;
  }
}

/* ===== 幻灯片组件优化 ===== */
.featured-media-section {
  margin-top: -2rem;
  margin-bottom: var(--spacing-lg);
  width: 100%;
  overflow: hidden;
  padding: 0 var(--spacing-sm);
}

.featured-media-container {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-sm);
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  height: auto;
  aspect-ratio: 16/6;
}

.featured-media-left {
  width: 60%;
  display: flex;
  min-height: 120px;
  flex: 1;
}

.featured-media-right {
  width: 40%;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  height: 100%;
  flex: 1;
}

.slideshow-container {
  position: relative;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  background-color: var(--color-neutral-100);
  height: 100%;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.slideshow-slide {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.slideshow-slide.active {
  opacity: 1;
}

.slideshow-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background-color: var(--color-neutral-100);
}

.slideshow-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.slideshow-dots {
  position: absolute;
  bottom: var(--spacing-sm);
  right: var(--spacing-sm);
  display: flex;
  gap: var(--spacing-xs);
}

.slideshow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slideshow-dot.active {
  background-color: white;
  transform: scale(1.2);
}

.promo-card {
  position: relative;
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  color: white;
  transition: transform var(--transition-normal);
  min-height: 60px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  text-decoration: none;
}

.promo-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: white;
}

.promo-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.promo-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  padding: var(--spacing-sm);
  z-index: 2;
}

.promo-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin: 0;
  line-height: 1.2;
}

.promo-description {
  font-size: var(--font-size-xs);
  margin: 0.2rem 0 0 0;
  opacity: 0.9;
  line-height: 1.2;
}

/* ===== 移动端幻灯片组件固定布局 ===== */
@media (max-width: 768px) {
  .featured-media-section {
    padding: 0 var(--spacing-xs);
    margin-top: -1.5rem;
  }
  
  .featured-media-container {
    gap: var(--spacing-xs);
    aspect-ratio: 16/7;
  }
  
  .featured-media-left {
    width: 58%;
  }
  
  .featured-media-right {
    width: 42%;
    gap: var(--spacing-xs);
  }
  
  .slideshow-caption {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
  }
  
  .promo-content {
    padding: var(--spacing-xs);
  }
  
  .promo-title {
    font-size: var(--font-size-xs);
  }
  
  .promo-description {
    font-size: 0.65rem;
  }
}

@media (max-width: 480px) {
  .featured-media-container {
    aspect-ratio: 16/8;
  }
  
  .slideshow-caption {
    padding: 0.3rem var(--spacing-xs);
    font-size: 0.7rem;
  }
  
  .slideshow-dots {
    bottom: 0.3rem;
    right: 0.3rem;
  }
  
  .slideshow-dot {
    width: 6px;
    height: 6px;
  }
  
  .promo-content {
    padding: 0.3rem var(--spacing-xs);
  }
  
  .promo-title {
    font-size: 0.7rem;
  }
  
  .promo-description {
    font-size: 0.6rem;
  }
}

/* ===== 导航栏优化 ===== */
.nav {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: sticky;
  top: 0;
  z-index: 50;
}

.dark .nav {
  background: rgba(23, 23, 23, 0.95);
  border-bottom-color: var(--color-border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-logo:hover {
  color: var(--color-primary-dark);
  text-decoration: none;
}

/* ===== 按钮系统 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  text-decoration: none;
}

/* ===== 图标按钮 ===== */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
}

.icon-btn:hover {
  background: var(--color-neutral-100);
  color: var(--color-text-primary);
  transform: scale(1.05);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
}

.theme-toggle:hover {
  background: var(--color-neutral-100);
  color: var(--color-primary);
  transform: rotate(180deg);
}

/* ===== 移动端侧边栏 ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  z-index: 100;
  padding: var(--spacing-lg);
}

.sidebar.open {
  transform: translateX(0);
}

.dark .sidebar {
  background: rgba(23, 23, 23, 0.98);
  border-right-color: var(--color-border);
}

.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 99;
}

.sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-lg);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
}

.sidebar-close:hover {
  background: var(--color-neutral-100);
  color: var(--color-text-primary);
}

.sidebar-nav-item {
  display: block;
  padding: var(--spacing-md) 0;
  color: var(--color-text-primary);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.sidebar-nav-item:hover {
  color: var(--color-primary);
  text-decoration: none;
  padding-left: var(--spacing-sm);
}

.sidebar-nav-item.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== 工具卡片系统 ===== */
.tool-card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
  height: 100%;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--color-text-primary);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-border-hover);
  text-decoration: none;
  color: var(--color-text-primary);
}

.tool-card-header {
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.tool-card-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  object-fit: cover;
  background: var(--color-neutral-100);
  flex-shrink: 0;
}

.tool-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
  line-height: 1.3;
}

.tool-card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0.2rem 0 0 0;
  line-height: 1.3;
}

.tool-card-body {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.tool-card-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
  flex: 1;
}

.tool-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tool-card-tag {
  background: var(--color-neutral-100);
  color: var(--color-text-secondary);
  padding: 0.25rem var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.tool-card:hover .tool-card-tag {
  background: var(--color-primary);
  color: white;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tool-card-rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ===== 响应式优化 ===== */
@media (max-width: 768px) {
  .nav-container {
    padding: var(--spacing-md) var(--spacing-md);
  }
  
  .tool-card-header {
    padding: var(--spacing-md);
  }
  
  .tool-card-body {
    padding: 0 var(--spacing-md) var(--spacing-md);
  }
  
  .tool-card-logo {
    width: 40px;
    height: 40px;
  }
  
  .tool-card-title {
    font-size: var(--font-size-base);
  }
}

/* ===== 动画系统 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease-out;
}

.animate-fadeIn {
  animation: fadeIn 0.4s ease-out;
}

.animate-slideInLeft {
  animation: slideInLeft 0.5s ease-out;
}

/* ===== 滚动条优化 ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-neutral-100);
  border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb {
  background: var(--color-neutral-300);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-neutral-400);
}

/* ===== 平滑滚动 ===== */
html {
  scroll-behavior: smooth;
}

/* ===== 焦点样式 ===== */
*:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== 选择文本样式 ===== */
::selection {
  background: var(--color-primary);
  color: white;
}

/* ===== 加载状态 ===== */
.loading-spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ===== 工具类 ===== */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-effect {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark .glass-effect {
  background: rgba(0, 0, 0, 0.2);
  border-color: rgba(255, 255, 255, 0.1);
}

.hover-lift {
  transition: transform var(--transition-normal);
}

.hover-lift:hover {
  transform: translateY(-2px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (max-width: 640px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* ===== 展开按钮样式 ===== */
.expand-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-bg-primary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.expand-button:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== 新增标签样式 ===== */
.boom-tag {
  position: absolute;
  top: var(--spacing-xs);
  right: var(--spacing-xs);
  background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
  color: white;
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.6rem;
  font-weight: 600;
  z-index: 3;
  box-shadow: var(--shadow-sm);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* ===== 页脚样式 ===== */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.footer-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.footer-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ===== Hero区域样式 ===== */
.hero {
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
  }
}